Changes

*[http://dli.serc.iisc.ernet.in/handle/2015/274726 ''A History of the Army Ordnance Services, Volume III: The Great War''] by Major General Arthur Forbes 2nd edition 1932, first published 1929. Pdf download, Digital Library of India. Includes a chapter on Salonika.

*''War in the Air: being the story of the part played in the Great War by the Royal Air Force'' [https://archive.org/details/warinairbeingsto05rale Volume V] by H A Jones 1935. Part of the series ''History of the Great War based on official documents''. Includes Macedonia. Archive.org

*[https://archive.org/details/cu31924027947120 ''Russia, the Balkans and the Dardanelles''] by Granville Fortescue, Special Correspondent of ''The Daily Telegraph'' 1915 Archive.org

*[https://archive.org/details/interventionofbu00priciala ''The Intervention of Bulgaria : and the Central Macedonian question''] by Crawfurd Price 1915 Archive.org